GB640508A - Device for setting selectors by means of audio-frequencies - Google Patents
Device for setting selectors by means of audio-frequenciesInfo
- Publication number
- GB640508A GB640508A GB462/47A GB46247A GB640508A GB 640508 A GB640508 A GB 640508A GB 462/47 A GB462/47 A GB 462/47A GB 46247 A GB46247 A GB 46247A GB 640508 A GB640508 A GB 640508A
- Authority
- GB
- United Kingdom
- Prior art keywords
- relay
- register
- line
- marker
- magnet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/0008—Selecting arrangements using relay selectors in the switching stages
- H04Q3/0012—Selecting arrangements using relay selectors in the switching stages in which the relays are arranged in a matrix configuration
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Relay Circuits (AREA)
- Telephonic Communication Services (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE640508X | 1946-01-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB640508A true GB640508A (en) | 1950-07-19 |
Family
ID=20313773
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB462/47A Expired GB640508A (en) | 1946-01-26 | 1947-01-06 | Device for setting selectors by means of audio-frequencies |
Country Status (4)
Country | Link |
---|---|
US (1) | US2761901A (de) |
BE (1) | BE470519A (de) |
FR (1) | FR939828A (de) |
GB (1) | GB640508A (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL236960A (de) * | 1958-03-10 | |||
NL242116A (de) * | 1958-11-03 | |||
NL129299C (de) * | 1958-11-24 | |||
DE1762060A1 (de) * | 1967-03-31 | 1970-04-30 | Nippon Electric Co | Zwischenamtswaehlsystem fuer ein Fernsprech-Waehlvermittlungsnetz |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR961957A (de) * | 1940-05-15 | 1950-05-26 | ||
US2356330A (en) * | 1943-04-09 | 1944-08-22 | Bell Telephone Labor Inc | Signaling system |
US2299897A (en) * | 1941-04-26 | 1942-10-27 | Bell Telephone Labor Inc | Signaling system |
US2310452A (en) * | 1941-06-05 | 1943-02-09 | Bell Telephone Labor Inc | Switching system |
US2303356A (en) * | 1941-12-30 | 1942-12-01 | Bell Telephone Labor Inc | Selecting system |
US2326478A (en) * | 1942-02-17 | 1943-08-10 | Bell Telephone Labor Inc | Selection system |
US2326458A (en) * | 1942-02-17 | 1943-08-10 | Bell Telephone Labor Inc | Selection system |
US2332912A (en) * | 1942-05-01 | 1943-10-26 | Bell Telephone Labor Inc | Telephone system |
US2388347A (en) * | 1944-06-27 | 1945-11-06 | Bell Telephone Labor Inc | Signaling system |
-
0
- BE BE470519D patent/BE470519A/xx unknown
-
1947
- 1947-01-06 GB GB462/47A patent/GB640508A/en not_active Expired
- 1947-01-20 FR FR939828D patent/FR939828A/fr not_active Expired
-
1951
- 1951-07-11 US US236237A patent/US2761901A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
FR939828A (fr) | 1948-11-25 |
BE470519A (de) | |
US2761901A (en) | 1956-09-04 |
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